This is incredible: Google Has a Secret Reference Desk. Here’s How to Use It. I knew some of these but not all, e.g. verbatim mode “returns results for exactly what you typed, stripped of personalization and synonym-swapping.” https://cardcatalogforlife.substack.com/p/google-has-a-secret-reference-desk
Google Has a Secret Reference Desk. Here's How to Use It.

40 Google features to find exactly what you need, the alternative search engines that do things Google won't, and the reference desk framework underneath all of it.

Card Catalog

@kottke There was a time when +asearchterm made it mandatory.

Google killed that syntax so hard that other search engines dropped it.

I miss that time.

@NegativeK There was a time when *including a search term* made that term mandatory.